diff options
Diffstat (limited to 'kernel/arch/mips/sgi-ip22/ip22-hpc.c')
| -rw-r--r-- | kernel/arch/mips/sgi-ip22/ip22-hpc.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/kernel/arch/mips/sgi-ip22/ip22-hpc.c b/kernel/arch/mips/sgi-ip22/ip22-hpc.c new file mode 100644 index 000000000..bb70589b5 --- /dev/null +++ b/kernel/arch/mips/sgi-ip22/ip22-hpc.c @@ -0,0 +1,63 @@ +/* + * ip22-hpc.c: Routines for generic manipulation of the HPC controllers. + * + * Copyright (C) 1996 David S. Miller (davem@davemloft.net) + * Copyright (C) 1998 Ralf Baechle + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/types.h> + +#include <asm/io.h> +#include <asm/sgi/hpc3.h> +#include <asm/sgi/ioc.h> +#include <asm/sgi/ip22.h> + +struct hpc3_regs *hpc3c0, *hpc3c1; + +EXPORT_SYMBOL(hpc3c0); +EXPORT_SYMBOL(hpc3c1); + +struct sgioc_regs *sgioc; + +EXPORT_SYMBOL(sgioc); + +/* We need software copies of these because they are write only. */ +u8 sgi_ioc_reset, sgi_ioc_write; + +extern char *system_type; + +void __init sgihpc_init(void) +{ + /* ioremap can't fail */ + hpc3c0 = (struct hpc3_regs *) + ioremap(HPC3_CHIP0_BASE, sizeof(struct hpc3_regs)); + hpc3c1 = (struct hpc3_regs *) + ioremap(HPC3_CHIP1_BASE, sizeof(struct hpc3_regs)); + /* IOC lives in PBUS PIO channel 6 */ + sgioc = (struct sgioc_regs *)hpc3c0->pbus_extregs[6]; + + hpc3c0->pbus_piocfg[6][0] |= HPC3_PIOCFG_DS16; + if (ip22_is_fullhouse()) { + /* Full House comes with INT2 which lives in PBUS PIO + * channel 4 */ + sgint = (struct sgint_regs *)hpc3c0->pbus_extregs[4]; + system_type = "SGI Indigo2"; + } else { + /* Guiness comes with INT3 which is part of IOC */ + sgint = &sgioc->int3; + system_type = "SGI Indy"; + } + + sgi_ioc_reset = (SGIOC_RESET_PPORT | SGIOC_RESET_KBDMOUSE | + SGIOC_RESET_EISA | SGIOC_RESET_ISDN | + SGIOC_RESET_LC0OFF); + + sgi_ioc_write = (SGIOC_WRITE_EASEL | SGIOC_WRITE_NTHRESH | + SGIOC_WRITE_TPSPEED | SGIOC_WRITE_EPSEL | + SGIOC_WRITE_U0AMODE | SGIOC_WRITE_U1AMODE); + + sgioc->reset = sgi_ioc_reset; + sgioc->write = sgi_ioc_write; +} |